package com.atguigu.ucenter.mapper;

import com.atguigu.ucenter.entity.Member;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.apache.ibatis.annotations.Param;

/**
 * <p>
 * 会员表 Mapper 接口
 * </p>
 *
 * @author Rayyy666
 * @since 2022-04-14
 */
public interface MemberMapper extends BaseMapper<Member> {

    //查询某一天的注册人数
    Integer countRegisterOneDay(@Param("day") String day);

}
